take a look at the demo on the Internet are all nesting with div and then transform, but this does not support the emergence of borders, only borders should be how to draw?
/ / Please paste the code text below (do not replace the code with pictures)
<!-- html -->
<div class='div'></div>
<style>
.div {
position: relative;
width: 50px;
height: 86.6px;
margin: 50px auto;
background-color: red;
}
.div:before {
content: '';
display: block;
position: absolute;
width: 0;
height: 0;
right:50px;
border-width: 43.3px 25px;
border-style: solid;
border-color: transparent red transparent transparent;
}
.div:after {
content: '';
display: block;
position: absolute;
width: 0;
height: 0;
left:50px;
border-width: 43.3px 25px;
border-style: solid;
border-color: transparent transparent transparent red;
top:0;
}
</style>this kind of Baidu is a big one. No, no, no.
< hr >of the border you want
<div style='position:relative;width:100px;margin:0 auto;'>
<div class='one'></div>
<div class='two'></div>
<div class='three'></div>
</div>
<style>
.one {
width: 50px;
height: 86.6px;
margin: 0 auto;
border-top: 1px solid red;
border-bottom: 1px solid red;
}
.two {
position: absolute;
width: 50px;
height: 86.6px;
left: 25px;
top: 0;
transform: translate(-50%, -50%);
transform: rotate(60deg);
border-top: 1px solid red;
border-bottom: 1px solid red;
}
.three {
position: absolute;
width: 50px;
height: 86.6px;
left: 25px;
top: 0;
transform: translate(-50%, -50%);
transform: rotate(300deg);
border-top: 1px solid red;
border-bottom: 1px solid red;
}
</style>
read this blog
draw with svg.